Private Well Water Testing
Private well owner running a routine or first-time test for common contaminants (coliform bacteria, nitrate, arsenic) and needing a certified lab that fits their region and well.
View checklist and providers →Certified Water Labs
Find state-certified drinking-water testing labs near you — for well tests, mortgage closings, PFAS, and more.
Source-backed listings and practical guides for private well owners — checked against public records before anything is listed.
No invented reviews. Unverified provider rows are excluded from public listings.
Browse by need
What do you need checked?
Browse by state
Start with where the land is. Each state hub links to counties and provider categories.
New York
Directory research hub for New York counties. Certified drinking-water laboratory rows are sourced from the New York State ELAP (Environmental Laboratory Approval Program) registry.
Frequently asked questions
Are these directory listings source-backed?
Only providers with source-backed public records are shown. Invalid and unverified provider rows are excluded from public listing pages.
What does this directory do — and not do?
Certified Water Labs is an independent directory. We do not certify, accredit, endorse, or perform water testing. Laboratory certification is issued by state programs under EPA oversight; always verify a lab's current certification and your required test panel directly with the lab and your state program or lender before scheduling. Content is general information, not legal, financial, or health advice.
What should buyers verify independently?
Verify credentials, current availability, scope, and pricing directly with the provider and the official sources linked on each listing. This site never invents those details.